• Pridružio: 10 Feb 2005
  • Poruke: 3549

Eyeball electronics

Second Sight of California has come up with a novel way to operate retinal implants, one that could restore the vision of those with damaged eyes more effectively.

As with other systems, a camera fixed to a pair of glasses captures video images, and a small computer converts this into electrical impulses that can be fed to electrodes attached to the patient's retina.

But Second Sight thinks it has a neater way to link the electronics to the retinal implant. An electronic unit is attached to the white of the eyeball, the sclera, which is pierced to let a flexible line pass through to the retinal electrodes behind.

Unlike standard designs that require physical links between elements of the equipment, the video camera connects to the electronics wirelessly and receives its power wirelessly too, from an inductive coil on the glasses.

Read the eyeball electronics patent here.
Explosives alarm

Airports and border checks could improve security using a new type of explosives scanner patented by Lawrence Berkeley National Laboratory (LBNL) in California, on behalf of the US Department of Energy.

Existing security systems use X-ray wavelengths to look at the shape and density of suspect objects. The LBNL system could, however, pick up explosives automatically, by firing a beam of neutrons through a target bag or package.

The neutrons target the high levels of nitrogen found in most explosives, causing the material to emit gamma rays, which can then be detected using a simple sensor. As an added bonus, the neutron beam causes fissile materials to release more neutrons. So a combined gamma and neutron detector should be able to spot explosives or potential nuclear contraband in a single swoop.

A prototype neutron beam-based probe developed at the lab has a coil in the centre, surrounded by a layer of deuterium gas and a titanium shield. When a high-frequency radio signal is fed through the coil, the gas emits ions that bombard the titanium to release neutrons.

Output from the probe is a thousand times more powerful than other designs, the patent says, but a shaped shielding steers the neutrons forwards and away from the operator, making the system safe to use. The same approach could perhaps also be used to locate buried landmines, the creators suggest.

Read the explosives alarm patent here.
Dancing cellphone

Disappointed with your cellphone's lack of enthusiasm? Then you'll be relieved to hear that Motorola has devised a handset that dances for joy when it receives a call.

The "ambulatory" device, as it is described, sits on four vibrating feet that shake with different strength and in slightly different directions to make the whole handset wriggle around.

The device could, for example, shimmy in a clockwise direction to signal an incoming call from the office, or wobble counter-clockwise to alert the user to a new message.

Motorola even proposes using accelerometers to let the owner teach the phone how to dance when a certain person calls. A further party trick would see the device detect the beat of a music track and dance along in time.


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  • Pridružio: 26 Jan 2006
  • Poruke: 1

ma ja bih samo da pitam zasto je ovde na engleskom zasto nije na srpskom jeziku jer svaka druga stranica je na engleskom

  • Pridružio: 14 Jan 2006
  • Poruke: 87
  • Gde živiš: Lazarevac

@ Imperator: vidim da si ti ovde nov... pa dobro, ni ja nisam neki veteran! Very Happy Niko neje lud da prevodi tolike tekstove na srpski, kad ipak vecina nas, koliko-toliko, moze da "understanduje po engleski"! Wink [end offtopic]

  • Pridružio: 10 Feb 2005
  • Poruke: 3549

Tako je bilo ranije, sada se trudim da u nekoliko kratkih crta prevedem tekst, te stoga nemam bas puno vremena za sve oblasti.
Kazem tako je bilo tada, a sada je drugacije, a za prevod starih tema nemam vremena.

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